Salaam, I have had 3 c-sections, stomach surgeries, hernia repair and a lower body lift (two weeks ago for that one). In the grand scheme of things, I think that physically, the c-sections were the easiest and probably most comparable to what you are having done. After my 3rd c-section I went home less than 24 hours later and had folks over for dinner. It was an easy recovery.
If possible, my suggestion for the surgery would be an epidural and serious relaxation medicine rather than a general anasthesia. My last surgery was nearly 5 hours long and I was feeling REALLY good, not drugged, or stupid or anything, plus the pain control after the surgery is better if you have an epidural. I was barely aware for bits of it, but I didn't care:) The relaxation stuff was good.
Surgery is no fun, but it is generally very safe and I am sure you will do well. Don't sit too much, but don't strain anything-walk, no housework, plenty of rest and fluids and all that common sense stuff.
All the best!